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<div class="title">samples/cpp/tutorial_code/ImgProc/basic_drawing/Drawing_1.cpp</div>  </div>
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<p>An example using drawing functions Check <a class="el" href="../../df/d61/tutorial_random_generator_and_text.html">the corresponding tutorial</a> for more details</p>
<div class="fragment"><div class="line"></div><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="../../d0/d9c/core_2include_2opencv2_2core_8hpp.html">opencv2/core.hpp</a>&gt;</span></div><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="../../d1/d4f/imgproc_2include_2opencv2_2imgproc_8hpp.html">opencv2/imgproc.hpp</a>&gt;</span></div><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="../../d4/dd5/highgui_8hpp.html">opencv2/highgui.hpp</a>&gt;</span></div><div class="line"></div><div class="line"><span class="preprocessor">#define w 400</span></div><div class="line"></div><div class="line"><span class="keyword">using namespace </span><a class="code" href="../../d2/d75/namespacecv.html">cv</a>;</div><div class="line"></div><div class="line"><span class="keywordtype">void</span> MyEllipse( <a name="_a0"></a><a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> img, <span class="keywordtype">double</span> angle );</div><div class="line"><span class="keywordtype">void</span> MyFilledCircle( <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> img, <a name="_a1"></a><a class="code" href="../../db/d4e/classcv_1_1Point__.html">Point</a> center );</div><div class="line"><span class="keywordtype">void</span> MyPolygon( <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> img );</div><div class="line"><span class="keywordtype">void</span> MyLine( <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> img, <a class="code" href="../../db/d4e/classcv_1_1Point__.html">Point</a> start, <a class="code" href="../../db/d4e/classcv_1_1Point__.html">Point</a> end );</div><div class="line"></div><div class="line"><span class="keywordtype">int</span> main( <span class="keywordtype">void</span> ){</div><div class="line"></div><div class="line">  <span class="keywordtype">char</span> atom_window[] = <span class="stringliteral">&quot;Drawing 1: Atom&quot;</span>;</div><div class="line">  <span class="keywordtype">char</span> rook_window[] = <span class="stringliteral">&quot;Drawing 2: Rook&quot;</span>;</div><div class="line"></div><div class="line">  <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> atom_image = <a name="a2"></a><a class="code" href="../../d3/d63/classcv_1_1Mat.html#a0b57b6a326c8876d944d188a46e0f556">Mat::zeros</a>( w, w, <a name="a3"></a><a class="code" href="../../d1/d1b/group__core__hal__interface.html#ga88c4cd9de76f678f33928ef1e3f96047">CV_8UC3</a> );</div><div class="line">  <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> rook_image = <a class="code" href="../../d3/d63/classcv_1_1Mat.html#a0b57b6a326c8876d944d188a46e0f556">Mat::zeros</a>( w, w, <a class="code" href="../../d1/d1b/group__core__hal__interface.html#ga88c4cd9de76f678f33928ef1e3f96047">CV_8UC3</a> );</div><div class="line"></div><div class="line"></div><div class="line">  MyEllipse( atom_image, 90 );</div><div class="line">  MyEllipse( atom_image, 0 );</div><div class="line">  MyEllipse( atom_image, 45 );</div><div class="line">  MyEllipse( atom_image, -45 );</div><div class="line"></div><div class="line">  MyFilledCircle( atom_image, <a name="a4"></a><a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( w/2, w/2) );</div><div class="line"></div><div class="line"></div><div class="line">  MyPolygon( rook_image );</div><div class="line"></div><div class="line">  <a name="a5"></a><a class="code" href="../../d6/d6e/group__imgproc__draw.html#ga07d2f74cadcf8e305e810ce8eed13bc9">rectangle</a>( rook_image,</div><div class="line">         <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 0, 7*w/8 ),</div><div class="line">         <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( w, w),</div><div class="line">         <a name="a6"></a><a class="code" href="../../dc/d84/group__core__basic.html#ga599fe92e910c027be274233eccad7beb">Scalar</a>( 0, 255, 255 ),</div><div class="line">         <a name="a7"></a><a class="code" href="../../d6/d6e/group__imgproc__draw.html#ggaf076ef45de481ac96e0ab3dc2c29a777a89c5f6beef080e6df347167f85e07b9e">FILLED</a>,</div><div class="line">         <a name="a8"></a><a class="code" href="../../d6/d6e/group__imgproc__draw.html#ggaf076ef45de481ac96e0ab3dc2c29a777a5d32eda7017db273a37f158e5b51442a">LINE_8</a> );</div><div class="line"></div><div class="line">  MyLine( rook_image, <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 0, 15*w/16 ), <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( w, 15*w/16 ) );</div><div class="line">  MyLine( rook_image, <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( w/4, 7*w/8 ), <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( w/4, w ) );</div><div class="line">  MyLine( rook_image, <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( w/2, 7*w/8 ), <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( w/2, w ) );</div><div class="line">  MyLine( rook_image, <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 3*w/4, 7*w/8 ), <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 3*w/4, w ) );</div><div class="line"></div><div class="line">  <a name="a9"></a><a class="code" href="../../d7/dfc/group__highgui.html#ga453d42fe4cb60e5723281a89973ee563">imshow</a>( atom_window, atom_image );</div><div class="line">  <a name="a10"></a><a class="code" href="../../d7/dfc/group__highgui.html#ga8d86b207f7211250dbe6e28f76307ffb">moveWindow</a>( atom_window, 0, 200 );</div><div class="line">  <a class="code" href="../../d7/dfc/group__highgui.html#ga453d42fe4cb60e5723281a89973ee563">imshow</a>( rook_window, rook_image );</div><div class="line">  <a class="code" href="../../d7/dfc/group__highgui.html#ga8d86b207f7211250dbe6e28f76307ffb">moveWindow</a>( rook_window, w, 200 );</div><div class="line"></div><div class="line">  <a name="a11"></a><a class="code" href="../../d7/dfc/group__highgui.html#ga5628525ad33f52eab17feebcfba38bd7">waitKey</a>( 0 );</div><div class="line">  <span class="keywordflow">return</span>(0);</div><div class="line">}</div><div class="line"></div><div class="line"></div><div class="line"><span class="keywordtype">void</span> MyEllipse( <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> img, <span class="keywordtype">double</span> angle )</div><div class="line">{</div><div class="line">  <span class="keywordtype">int</span> thickness = 2;</div><div class="line">  <span class="keywordtype">int</span> lineType = 8;</div><div class="line"></div><div class="line">  <a name="a12"></a><a class="code" href="../../d6/d6e/group__imgproc__draw.html#ga28b2267d35786f5f890ca167236cbc69">ellipse</a>( img,</div><div class="line">       <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( w/2, w/2 ),</div><div class="line">       <a name="a13"></a><a class="code" href="../../dc/d84/group__core__basic.html#ga346f563897249351a34549137c8532a0">Size</a>( w/4, w/16 ),</div><div class="line">       angle,</div><div class="line">       0,</div><div class="line">       360,</div><div class="line">       <a class="code" href="../../dc/d84/group__core__basic.html#ga599fe92e910c027be274233eccad7beb">Scalar</a>( 255, 0, 0 ),</div><div class="line">       thickness,</div><div class="line">       lineType );</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keywordtype">void</span> MyFilledCircle( <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> img, <a class="code" href="../../db/d4e/classcv_1_1Point__.html">Point</a> center )</div><div class="line">{</div><div class="line">  <a name="a14"></a><a class="code" href="../../d6/d6e/group__imgproc__draw.html#gaf10604b069374903dbd0f0488cb43670">circle</a>( img,</div><div class="line">      center,</div><div class="line">      w/32,</div><div class="line">      <a class="code" href="../../dc/d84/group__core__basic.html#ga599fe92e910c027be274233eccad7beb">Scalar</a>( 0, 0, 255 ),</div><div class="line">      <a class="code" href="../../d6/d6e/group__imgproc__draw.html#ggaf076ef45de481ac96e0ab3dc2c29a777a89c5f6beef080e6df347167f85e07b9e">FILLED</a>,</div><div class="line">      <a class="code" href="../../d6/d6e/group__imgproc__draw.html#ggaf076ef45de481ac96e0ab3dc2c29a777a5d32eda7017db273a37f158e5b51442a">LINE_8</a> );</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keywordtype">void</span> MyPolygon( <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> img )</div><div class="line">{</div><div class="line">  <span class="keywordtype">int</span> lineType = <a class="code" href="../../d6/d6e/group__imgproc__draw.html#ggaf076ef45de481ac96e0ab3dc2c29a777a5d32eda7017db273a37f158e5b51442a">LINE_8</a>;</div><div class="line"></div><div class="line">  <a class="code" href="../../db/d4e/classcv_1_1Point__.html">Point</a> rook_points[1][20];</div><div class="line">  rook_points[0][0]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(    w/4,   7*w/8 );</div><div class="line">  rook_points[0][1]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(  3*w/4,   7*w/8 );</div><div class="line">  rook_points[0][2]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(  3*w/4,  13*w/16 );</div><div class="line">  rook_points[0][3]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 11*w/16, 13*w/16 );</div><div class="line">  rook_points[0][4]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 19*w/32,  3*w/8 );</div><div class="line">  rook_points[0][5]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(  3*w/4,   3*w/8 );</div><div class="line">  rook_points[0][6]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(  3*w/4,     w/8 );</div><div class="line">  rook_points[0][7]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 26*w/40,    w/8 );</div><div class="line">  rook_points[0][8]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 26*w/40,    w/4 );</div><div class="line">  rook_points[0][9]  = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 22*w/40,    w/4 );</div><div class="line">  rook_points[0][10] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 22*w/40,    w/8 );</div><div class="line">  rook_points[0][11] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 18*w/40,    w/8 );</div><div class="line">  rook_points[0][12] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 18*w/40,    w/4 );</div><div class="line">  rook_points[0][13] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 14*w/40,    w/4 );</div><div class="line">  rook_points[0][14] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 14*w/40,    w/8 );</div><div class="line">  rook_points[0][15] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(    w/4,     w/8 );</div><div class="line">  rook_points[0][16] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(    w/4,   3*w/8 );</div><div class="line">  rook_points[0][17] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>( 13*w/32,  3*w/8 );</div><div class="line">  rook_points[0][18] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(  5*w/16, 13*w/16 );</div><div class="line">  rook_points[0][19] = <a class="code" href="../../dc/d84/group__core__basic.html#ga1e83eafb2d26b3c93f09e8338bcab192">Point</a>(    w/4,  13*w/16 );</div><div class="line"></div><div class="line">  <span class="keyword">const</span> <a class="code" href="../../db/d4e/classcv_1_1Point__.html">Point</a>* ppt[1] = { rook_points[0] };</div><div class="line">  <span class="keywordtype">int</span> npt[] = { 20 };</div><div class="line"></div><div class="line">  <a name="a15"></a><a class="code" href="../../d6/d6e/group__imgproc__draw.html#ga8c69b68fab5f25e2223b6496aa60dad5">fillPoly</a>( img,</div><div class="line">        ppt,</div><div class="line">        npt,</div><div class="line">        1,</div><div class="line">        <a class="code" href="../../dc/d84/group__core__basic.html#ga599fe92e910c027be274233eccad7beb">Scalar</a>( 255, 255, 255 ),</div><div class="line">        lineType );</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keywordtype">void</span> MyLine( <a class="code" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> img, <a class="code" href="../../db/d4e/classcv_1_1Point__.html">Point</a> start, <a class="code" href="../../db/d4e/classcv_1_1Point__.html">Point</a> end )</div><div class="line">{</div><div class="line">  <span class="keywordtype">int</span> thickness = 2;</div><div class="line">  <span class="keywordtype">int</span> lineType = <a class="code" href="../../d6/d6e/group__imgproc__draw.html#ggaf076ef45de481ac96e0ab3dc2c29a777a5d32eda7017db273a37f158e5b51442a">LINE_8</a>;</div><div class="line"></div><div class="line">  <a name="a16"></a><a class="code" href="../../d6/d6e/group__imgproc__draw.html#ga7078a9fae8c7e7d13d24dac2520ae4a2">line</a>( img,</div><div class="line">    start,</div><div class="line">    end,</div><div class="line">    <a class="code" href="../../dc/d84/group__core__basic.html#ga599fe92e910c027be274233eccad7beb">Scalar</a>( 0, 0, 0 ),</div><div class="line">    thickness,</div><div class="line">    lineType );</div><div 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